package com.im.partchat.utils;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.text.TextUtils;

import com.im.partchat.App;

import java.io.File;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created by flyou on 2017/6/26
 * 文件(文件夹)工具类
 */

public class FileUtils {
    private static final String[][] MIME_MapTable={
            //{后缀名， MIME类型}
            {".3gp",    "video/3gpp"},
            {".apk",    "application/vnd.android.package-archive"},
            {".asf",    "video/x-ms-asf"},
            {".avi",    "video/x-msvideo"},
            {".bin",    "application/octet-stream"},
            {".bmp",    "image/bmp"},
            {".c",  "text/plain"},
            {".class",  "application/octet-stream"},
            {".conf",   "text/plain"},
            {".cpp",    "text/plain"},
            {".doc",    "application/msword"},
            {".docx",   "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
            {".xls",    "application/vnd.ms-excel"},
            {".xlsx",   "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
            {".exe",    "application/octet-stream"},
            {".gif",    "image/gif"},
            {".gtar",   "application/x-gtar"},
            {".gz", "application/x-gzip"},
            {".h",  "text/plain"},
            {".htm",    "text/html"},
            {".html",   "text/html"},
            {".jar",    "application/java-archive"},
            {".java",   "text/plain"},
            {".jpeg",   "image/jpeg"},
            {".jpg",    "image/jpeg"},
            {".js", "application/x-javascript"},
            {".log",    "text/plain"},
            {".m3u",    "audio/x-mpegurl"},
            {".m4a",    "audio/mp4a-latm"},
            {".m4b",    "audio/mp4a-latm"},
            {".m4p",    "audio/mp4a-latm"},
            {".m4u",    "video/vnd.mpegurl"},
            {".m4v",    "video/x-m4v"},
            {".mov",    "video/quicktime"},
            {".mp2",    "audio/x-mpeg"},
            {".mp3",    "audio/x-mpeg"},
            {".mp4",    "video/mp4"},
            {".mpc",    "application/vnd.mpohun.certificate"},
            {".mpe",    "video/mpeg"},
            {".mpeg",   "video/mpeg"},
            {".mpg",    "video/mpeg"},
            {".mpg4",   "video/mp4"},
            {".mpga",   "audio/mpeg"},
            {".msg",    "application/vnd.ms-outlook"},
            {".ogg",    "audio/ogg"},
            {".pdf",    "application/pdf"},
            {".png",    "image/png"},
            {".pps",    "application/vnd.ms-powerpoint"},
            {".ppt",    "application/vnd.ms-powerpoint"},
            {".pptx",   "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
            {".prop",   "text/plain"},
            {".rc", "text/plain"},
            {".rmvb",   "audio/x-pn-realaudio"},
            {".rtf",    "application/rtf"},
            {".sh", "text/plain"},
            {".tar",    "application/x-tar"},
            {".tgz",    "application/x-compressed"},
            {".txt",    "text/plain"},
            {".wav",    "audio/x-wav"},
            {".wma",    "audio/x-ms-wma"},
            {".wmv",    "audio/x-ms-wmv"},
            {".wps",    "application/vnd.ms-works"},
            {".xml",    "text/plain"},
            {".z",  "application/x-compress"},
            {".zip",    "application/x-zip-compressed"},
            {"",        "*/*"}
    };

    private static final String TAG = "FileUtils";

    private static final String ROOT_PATH = Environment.getExternalStorageDirectory()
            + File.separator
            + App.getApplication().getPackageName();

    private static final String CACHE = "/cache/";

    /**
     * 在初始化时创建APP所需要的基础文件夹
     * 在6.0以上版本时需要进行权限申请
     * @param context 上下文
     */
    public static void init(Context context) {
        LogUtils.d(TAG, "Root path is " + ROOT_PATH);
        createFileDir(context, CACHE);
    }

    /**
     * 创建文件夹
     * 在6.0以上版本时需要进行权限申请
     * @param context 上下文
     * @param fileDirName 文件夹名字
     */
    public static void createFileDir(Context context, String fileDirName) {

        File rootDir = new File(ROOT_PATH);
        boolean isRootSuccess = false;
        if (!rootDir.exists()) {
            isRootSuccess = rootDir.mkdirs();
        }

        File fileDir;
        if (isExistSDCard()) {
            fileDir = new File(ROOT_PATH + fileDirName);
        } else {
            fileDir = new File(getInternalPath(context) + fileDirName);
        }

        boolean isFileSuccess = false;
        if (!fileDir.exists()) {
            isFileSuccess = fileDir.mkdirs();
        }

        LogUtils.d(TAG, "is root dir create success? " + isRootSuccess);
        LogUtils.d(TAG, "is file dir create success? " + isFileSuccess);

    }

    /**
     * 在没有sdcard时获取内部存储路径
     * @return
     */
    public static String getInternalPath(Context context) {
        LogUtils.d(TAG, "internal path is " + context.getFilesDir().getPath());
        return context.getFilesDir().getPath() + context.getPackageName();
    }

    /**
     * 检测是否SDCard是否存在
     * @return true：存在 false：不存在
     */
    public static boolean isExistSDCard() {
        return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
    }

    public static boolean isFileExist(String filePath) {
        if (TextUtils.isEmpty(filePath)) {
            return false;
        }

        File file = new File(filePath);
        return (file.exists() && file.isFile());
    }

    public static String getFileExt(String filePath){
        String ext = null;
        String suffixes="avi|mpeg|3gp|mp3|mp4|wav|jpeg|gif|jpg|png|apk|exe|pdf|rar|zip|docx|doc";
        Pattern pat=Pattern.compile("[\\w]+[\\.]("+suffixes+")");
        Matcher mc=pat.matcher(filePath);
        while(mc.find()){
            ext = mc.group();

        }
        return ext;
    }




    /**
     * 打开文件
     * @param file
     */
    public static Intent openFile(File file){

        Intent intent = new Intent();
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        //设置intent的Action属性
        intent.setAction(Intent.ACTION_VIEW);
        //获取文件file的MIME类型
        String type = getMIMEType(file);
        //设置intent的data和Type属性。
        intent.setDataAndType(/*uri*/Uri.fromFile(file), type);
        //跳转
       return intent;

    }

    /**
     * 根据文件后缀名获得对应的MIME类型。
     * @param file
     */
    private  static  String getMIMEType(File file) {

        String type="*/*";
        String fName = file.getName();
        //获取后缀名前的分隔符"."在fName中的位置。
        int dotIndex = fName.lastIndexOf(".");
        if(dotIndex < 0){
            return type;
        }
    /* 获取文件的后缀名 */
        String end=fName.substring(dotIndex,fName.length()).toLowerCase();
        if(end=="")return type;
        //在MIME和文件类型的匹配表中找到对应的MIME类型。
        for(int i=0;i<MIME_MapTable.length;i++){ //MIME_MapTable??在这里你一定有疑问，这个MIME_MapTable是什么？
            if(end.equals(MIME_MapTable[i][0]))
                type = MIME_MapTable[i][1];
        }
        return type;
    }
}
